Examine source code of Screen Color Grab

{
  "manifest_version": 2,
  "name": "Screen Color Grab",
  "version": "99993",
  "description": "Sample pixel colors from any part of your screen. Get HEX, RGB and HSL values with one click.",
  "browser_specific_settings": {
    "gecko": {
      "id": "{2e39e773-a18d-4de8-b611-54b2a9588ef2}",
      "strict_min_version": "96.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  },
  "browser_action": {
    "default_icon": {
      "16": "assets/icons/icon16.png",
      "32": "assets/icons/icon32.png",
      "48": "assets/icons/icon48.png",
      "96": "assets/icons/icon96.png",
      "128": "assets/icons/icon128.png"
    },
    "default_title": "Screen Color Grab",
    "default_popup": "src/popup.html"
  },
  "icons": {
    "16": "assets/icons/icon16.png",
    "32": "assets/icons/icon32.png",
    "48": "assets/icons/icon48.png",
    "96": "assets/icons/icon96.png",
    "128": "assets/icons/icon128.png"
  },
  "permissions": [
    "storage",
    "clipboardWrite"
  ]
}